Additive for production of irons and steels

Details Additive for production of irons and steels Additive for production of irons and steels

2005-03-15

2005-03-15

Mai, Ngoclan T. (Department: 1742)

Specialized metallurgical processes, compositions for use therei

Compositions

Solid treating composition for liquid metal or charge

C075S232000, C075S316000, C075S328000, C075S526000, C075S562000

Reexamination Certificate

active

06866696

ABSTRACT:
A technique for producing iron utilizes agglomerations, such as briquettes or tablets, or powders, that include a sulfur-containing material such as iron sulfide, and and oxygen containing material such as iron oxide. The agglomerations or powders are substantially free of chemical binders and utilize iron and aluminum metal powders and pressure for compaction on either roll presses or tablet machines. Addition of metal powders provides rapid dissolution of the alloy and improved heat transfer. Iron sulfide agglomerations also provide consistent and improved sulfur recoveries compared to granulated iron sulfide additions with little to no sulfur odor.

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R.L. Naro and J.F. Wallace, “Minor Elements in Gray Iron, Background for the Development of a non-Ferrosilicon based Inoculant,” Report of Research Project, AFS Gray Iron Division, American Foundrymen's Society (1970).

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